1249560 has 128 divisors (see below), whose sum is σ = 4536000. Its totient is φ = 304128.

The previous prime is 1249559. The next prime is 1249603. The reversal of 1249560 is 659421.

It is a super-2 number, since 2×1249560² = 3122800387200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13996 + ... + 14084.

2^1249560 is an apocalyptic number.

1249560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1249560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2268000).

1249560 is an abundant number, since it is smaller than the sum of its proper divisors (3286440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249560 is a wasteful number, since it uses less digits than its factorization.

1249560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1249560 is about 1117.8371974487. The cubic root of 1249560 is about 107.7090936681.

It can be divided in two parts, 12495 and 60, that multiplied together give a triangular number (749700 = T₁₂₂₄).

The spelling of 1249560 in words is "one million, two hundred forty-nine thousand, five hundred sixty".